Information bidirectional transmission implementation method in wireless power transmission system

• Main Authors: WU XIAOKANG, ZHANG QIAN, HUANG XIAOHUA, KOU QIULIN, YANG GUOXUN, JIANG CHENG
• Format: Patent
• Language: Chinese; English
• Published: 21.08.2020
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY; TRANSMISSION; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention discloses an information bidirectional transmission realization device and method in a wireless power transmission system. The device comprises a primary side part and a secondary side part, wherein the primary side part comprises a primary side control unit, a frequency modulation unit, a primary side information sending unit and an envelope detection unit, the primary side controlunit changes the switching frequency of the frequency modulation unit so as to change the frequency of a primary side output voltage waveform, the envelope detection unit is used for receiving and restoring information transmitted to a primary side from a secondary side, the secondary side part comprises a secondary side control unit, an impedance adjusting unit, a secondary side information sending unit and a frequency discrimination unit, the secondary side control unit controls the equivalent impedance of the impedance adjusting unit so as to change the amplitude of the secondary side output voltage waveform, and t